timer.c

与C51相关模块LCD,24CXX,等的源代码程序

/******************************************************
DESIGN FOR TIMER USE
Designer: BH Zhang
Date:2006-1-11
Ver:1.0
Modify Mark:NONE
*******************************************************/
#include <at89x51.h>
#include "timer.h"
#include "rf315mhz.h"
#include "dfq.h"
//------------------------------------------------------
void InitTime(void){
	TMOD&=T1_MASK_;
	TMOD|=T0_M0_|T0_M1_;	//T0 Work on Mode 3
	ET0=1;					//Enable T0 Interrupt
	TH0=T1OverFlow;
	TL0=T0OverFlow;
	//PTO=0;
	//USE SERIAL COM,T1 NOT NEED INIT
	//TMOD&=T0_MASK_;
	//TMOD|=T1_M0_|T1_M1_;	//T1 Work on Mode 3
	ET1=1;					//Enable T1 Interrupt
	//TH1=0xEE;
	//TL1=0x10;
	PT1=1;
}
//------------------------------------------------------
unsigned char T0Beep=0;
unsigned int T0Second=4000;
unsigned int T0250usDelay=0;
//------------------------------------------------------
void timers0() interrupt 1
{
	TL0=T0OverFlow;
	
	if(T0250usDelay)T0250usDelay--;
	
	if(T0Second--==0){	//1 second tick
		T0Second=4000;
		if(T0Beep){
			BEEP=!BEEP;
			T0Beep--;
		}else BEEP=0;
		LedDispOn();
	}
}
//------------------------------------------------------
void timers1() interrupt 3
{
	TH0=T1OverFlow;
	nCodeLen++;			//record length per bit
}
//------------------------------------------------------